As there are not options included with this question, it is difficult to answer it precisely. Hitler blamed many different people for the struggles of Germany.
Jews were the most affected both by this belief and by the Holocaust. However, Hitler also targeted other groups, such as communists, homosexuals, Romani people, and other minorities. He also believed that much of the blame for Germany's social and economic problems should be directed towards the West, due to the "unreasonable" terms of the Treaty of Versailles.
The Helsinki Accords was an agreement that was signed at the end of the Conference on Security and Cooperation in Europe which 35 European plus the US and Canada signed. The main purpose of the Declaration was to reduce tension between East and West, reducing Cold War tensions.
